Tag: octopus
-
Cephalopods, from head to foot, part 2: Here’s lookin’ at you, squid
Much thanks to my brother for the excellent title. First, let’s talk a bit about how eyes evolved in general. First, there was the eyespot–a cell, or even part of a single celled organism, that has chemicals that react to light. It can’t really see beyond “there is light” vs “there isn’t light”, but even…
-
Cephalopods, from head to foot, part 1: Let There Be Squid
Small language joke there… Cephalopods–octopi, squid, cuttlefish, nautiluses, and a few others–are fascinating. They are likely the smartest invertebrates on this planet, and are probably bright enough to give many vertebrates a run for their money. But they are also, at least compared to us and what we are familiar with, *profoundly* alien. This was…